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1. 发明专利

DE4115321C2 未知
公开(公告)号：DE4115321C2
公开(公告)日：1995-06-01
申请号：DE4115321
申请日：1991-05-10
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TERAO MOTOYASU , ANDOO KEIKICHI , MIYAUCHI YASUSHI , OKAMINE SHIGENORI , TAMURA REIJI , TAKAHASHI MASAHIKO , FUTAMOTO MASAAKI
IPC分类号： G11B7/243 , G11B7/253 , G11B7/257 , G11B7/2578 , G11B7/26 , G11B7/24

2. 发明专利

DE68925331D1 未知
公开(公告)号：DE68925331D1
公开(公告)日：1996-02-15
申请号：DE68925331
申请日：1989-10-05
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TAMURA REIJI SHIHORYO , TERAO MOTOYASU , MIYAUCHI YASUSHI , ANDOO KEIKICHI , NISHIDA TETSUYA
IPC分类号： G11B7/0055 , G11B7/243 , G11B7/253 , G11B7/2531 , G11B7/257 , G11B7/258 , G11B7/2595 , G11B7/00 , G11B7/24

3. 发明授权

US6436504B2 Information recording medium 有权
标题翻译：信息记录介质
公开(公告)号：US6436504B2
公开(公告)日：2002-08-20
申请号：US83213701
申请日：2001-04-11
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAMOTO MAKOTO , HIROTSUNE AKEMI , ANDOO KEIKICHI , NISHIDA TETSUYA , TERAO MOTOYASU , USHIYAMA JUNKO , ANZAI YUMIKO
IPC分类号： G11B7/24 , G11B7/243 , G11B7/253 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/257 , G11B7/2578 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B7/2595 , B32B3/02
CPC分类号： G11B7/252 , G11B7/24 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/256 , G11B7/2578 , G11B7/2585 , G11B7/259 , G11B7/2595 , G11B2007/24304 , G11B2007/24306 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25711 , G11B2007/25713 , G11B2007/25715 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： An information recording medium having a substrate, a lower superficial layer formed on the substrate and having a thickness of not more than 25 nm, and a recording layer formed on the lower superficial layer. Information is recorded on the recording layer in accordance with a change of atomic arrangement caused by irradiation of light. The information recording medium includes and an absorption control layer formed on the recording layer.
摘要翻译：一种信息记录介质，具有基板，形成在基板上的厚度不大于25nm的下表面层和形成在下表面层上的记录层。根据由照射引起的原子排列的变化，将信息记录在记录层上。信息记录介质包括形成在记录层上的吸收控制层。

4. 发明专利

DE68925331T2 未知
公开(公告)号：DE68925331T2
公开(公告)日：1996-06-13
申请号：DE68925331
申请日：1989-10-05
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TAMURA REIJI SHIHORYO , TERAO MOTOYASU , MIYAUCHI YASUSHI , ANDOO KEIKICHI , NISHIDA TETSUYA
IPC分类号： G11B7/0055 , G11B7/243 , G11B7/253 , G11B7/2531 , G11B7/257 , G11B7/258 , G11B7/2595 , G11B7/00 , G11B7/24

5. 发明专利

DE4115321A1 Information recording layer 未知
公开(公告)号：DE4115321A1
公开(公告)日：1991-11-28
申请号：DE4115321
申请日：1991-05-10
申请人： HITACHI MAXELL , HITACHI LTD
发明人： TERAO MOTOYASU , ANDOO KEIKICHI , MIYAUCHI YASUSHI , OKAMINE SHIGENORI , TAMURA REIJI , TAKAHASHI MASAHIKO , FUTAMOTO MASAAKI
IPC分类号： G11B7/243 , G11B7/253 , G11B7/257 , G11B7/2578 , G11B7/26
摘要： An information recording layer, esp. for rewritable information carriers, which undergoes a property change on incidence of a recording beam of sufficient energy, has irregularities (pref. periodic peaks and valleys) at one or both sides to suppress flow, caused by the property change, and/or to reduce thermal conductivity. Also claimed are (i) an information recording material having one or more recording layers as described above; and (ii) processes for prodn. of the above recording layer or recording material.

6. 发明专利

DE69814773T2 未知
公开(公告)号：DE69814773T2
公开(公告)日：2004-03-18
申请号：DE69814773
申请日：1998-09-04
申请人： HITACHI LTD
发明人： MIYAMOTO MAKOTO , TODA TSUYOSHI , OHTAKE MASATOSHI , TERAO MOTOYASU , USHIYAMA JUNKO , ANDOO KEIKICHI , ANZAI YUMIKO , HIROTSUNE AKEMI , NISHIDA TETSUYA , SAGA HIDEKI
IPC分类号： G11B7/00 , G11B5/09 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/125 , G11B7/126 , G11B20/10 , G11B20/14
摘要： A method of recording information in a recording medium capable of being set in a first state with an energy beam at a first power level and in a second state with an energy beam at a second power level higher than said first power level, the method comprising: after irradiation of said recording medium with an energy beam at said first power level, irradiating said recording medium with an energy beam pulse at said second power level, wherein a duration of said irradiation with said energy beam at said first power level is changed in accordance with a relative speed between said energy beam and said recording medium.

7. 发明专利

DE19580491T1 未知
公开(公告)号：DE19580491T1
公开(公告)日：1996-05-09
申请号：DE19580491
申请日：1995-03-24
申请人： HITACHI LTD
发明人： MAEDA TAKESHI , SUGIYAMA HISATAKA , AWANO HIROYUKI , MIYAMOTO HARUKAZU , ANDOO KEIKICHI , WAKABAYASHI KOUICHIROU , SAITO ATSUSHI , SHIMANO TAKESHI , USHIYAMA JUNKO , KOMODA OSAMU , SAGA HIDEKI
IPC分类号： G11B7/00 , G11B7/095 , G11B11/00

8. 发明专利

DE3850430D1 未知
公开(公告)号：DE3850430D1
公开(公告)日：1994-08-04
申请号：DE3850430
申请日：1988-04-08
申请人： HITACHI LTD
发明人： YASUOKA HIROSHI , OJIMA MASAHIRO , TERAO MOTOYASU , NISHIDA TETSUYA , ANDOO KEIKICHI
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/125 , G11B7/30 , G11B11/00 , G11B19/02 , G11B7/007 , G11B7/013
摘要： The intensity of a laser beam is kept at a readout power level while an information recording medium is rotated, and the power is raised when necessary to irradiate a high power energy beam onto a portion with information already recorded thereon. When the high power energy beam passes over the already recorded portion, the temperature of the recording film (18) rises above the melting point. Whether the existing data portion is in a crystalline state or in an amorphous state, the recording film takes a fusion state. Thereafter, the entire irradiated portion takes nearly identical states when it is cooled. As a result, unadvantageous unerased information is largely reduced. Further, the extinguishment (off) time for recording is shorter than the preceding or succeeding high level time. Accordingly, all portions excepting a newly recorded point are erased. Single beam overwriting without unadvantageously leaving unerased information becomes possible. Further, most portions of the writing area of the recording film rise in temperature above the melting point. Even if the recording film is not processed with vapor deposition, information can be recorded thereon without the necessity of irradiating a laser beam once or heating it.

9. 发明专利

DE69814773D1 未知
公开(公告)号：DE69814773D1
公开(公告)日：2003-06-26
申请号：DE69814773
申请日：1998-09-04
申请人： HITACHI LTD
发明人： MIYAMOTO MAKOTO , TODA TSUYOSHI , OHTAKE MASATOSHI , TERAO MOTOYASU , USHIYAMA JUNKO , ANDOO KEIKICHI , ANZAI YUMIKO , HIROTSUNE AKEMI , NISHIDA TETSUYA , SAGA HIDEKI
IPC分类号： G11B7/00 , G11B5/09 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/125 , G11B7/126 , G11B20/10 , G11B20/14
摘要： A method of recording information in a recording medium capable of being set in a first state with an energy beam at a first power level and in a second state with an energy beam at a second power level higher than said first power level, the method comprising: after irradiation of said recording medium with an energy beam at said first power level, irradiating said recording medium with an energy beam pulse at said second power level, wherein a duration of said irradiation with said energy beam at said first power level is changed in accordance with a relative speed between said energy beam and said recording medium.

10. 发明专利

DE3850430T2 未知
公开(公告)号：DE3850430T2
公开(公告)日：1994-11-24
申请号：DE3850430
申请日：1988-04-08
申请人： HITACHI LTD
发明人： YASUOKA HIROSHI , OJIMA MASAHIRO , TERAO MOTOYASU , NISHIDA TETSUYA , ANDOO KEIKICHI
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/125 , G11B7/30 , G11B11/00 , G11B19/02 , G11B7/007 , G11B7/013
摘要： The intensity of a laser beam is kept at a readout power level while an information recording medium is rotated, and the power is raised when necessary to irradiate a high power energy beam onto a portion with information already recorded thereon. When the high power energy beam passes over the already recorded portion, the temperature of the recording film (18) rises above the melting point. Whether the existing data portion is in a crystalline state or in an amorphous state, the recording film takes a fusion state. Thereafter, the entire irradiated portion takes nearly identical states when it is cooled. As a result, unadvantageous unerased information is largely reduced. Further, the extinguishment (off) time for recording is shorter than the preceding or succeeding high level time. Accordingly, all portions excepting a newly recorded point are erased. Single beam overwriting without unadvantageously leaving unerased information becomes possible. Further, most portions of the writing area of the recording film rise in temperature above the melting point. Even if the recording film is not processed with vapor deposition, information can be recorded thereon without the necessity of irradiating a laser beam once or heating it.

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